Exercising when it's cold can feel tougher than usual. This gear makes it more doable.

Make sure your treadmill runs are both entertaining and productive with these three types of workouts.

This classic run workout is the elite's favorite.

Steep hill sprints are a proven, specific-strength workout for runners that increases power, speed and injury resistance.

It's more affordable than the Series 6 and comes with the most important features

Add these rolling-recovery intervals to your training program to develop your ability to burn lactate, and run faster for longer.

We asked a range of experts how they see things shaking out during a very challenging time

This challenging workout prepares your mind and body to hang on strongly after having to go out fast from the gun.

The company's library of studio exercise classes, integrated with on-screen fitness data from your Apple Watch, launches today. Our Sweat Science columnist takes it for a spin.

This face covering is good for both all-day wear and working out

A new generation of futuristic at-home workout solutions—including Mirror, Tonal, and Peloton—were gaining steam even before the pandemic

Get your training intensity and volume right by basing it on time rather than distance.

This challenging track session will teach your body to relax and aerobically recover while maintaining a fast pace.

Get used to pace changes in a race with this infamously arduous interval/tempo combination workout.

Figuring out how many calories running burns involves a fairly straightforward calculation, but the overall equation is not as simple as it seems.

This workout mixes two training elements into the same workout—giving you more bang for your buck!

This simple, pre-run lunge matrix gets your brain, muscles, connective tissue and joints talking to one another, and will make you a stronger, more durable runner.

Exercise outdoors all winter long with these essentials

Cold weather is no reason to skip your sweat sessions

The popular running lids can't always take the heat. These are the exceptions.

The search for the perfect jogging top has led us here

Building aerobic fitness is the key to making fast running feel "easy"

These 8 key workouts for each phase of a marathon training block will help you master the 26.2 mile race at whatever level you're at.

This high-tech—and high-priced—workout gear looks like it's out of science fiction

A solid run up one big hill can boost both speed and strength.

Here's how to maintain stretch and minimize stench over time

Do this hill workout to improve neuromuscular capabilities, enhance running economy, and increase recruitment of fast muscle fibers late in a race when fatigue hits.

Sweaty workouts do enhance your endurance, according to a new theory, but it may take longer and function differently than previously thought

This interval workout improves your ability to run hard all the way to the end of a 5K or 10K.

Put that bouncy desk chair to work with this full-body strength routine

When CEO Greg Glassman retired after making inflammatory comments about George Floyd, many in the fitness community weren't surprised. But where the popular fitness business goes from here is anyone's guess.

This fun and unique workout teaches you to pace with precision.

Advanced training methods proven effective by scientists, coaches, and athletes.

A professional climber dishes her secret sauce to mastering this dicey move

Do this simple acceleration workout to build strength, top speed, and stamina.

You can do more with this simple training tool than you think

Try elite marathoner Allie Kieffer’s marathon/10K alteration workout.

This tough workout preps you to run fast on tired legs and excels at getting you marathon-ready.

Your sweatiest endeavors are no match for this kit

Goods to take you from morning sun salutation to bedtime savasana

Miss your go-to barre studio or lifting weights at the gym? Bring some structure into your living-room workouts with these videos that are Outside tested and approved.

Having a solid routine is more important than ever

This challenging and versatile speed play option can be used throughout your training program.

Hone your ability to judge running effort and extend yourself a bit more with each interval in this elite-proven workout.

This simple piece of gear will keep you fit—and from punching holes in the walls—during quarantine

New research explores why you go slower and feel worse, even though you’re pushing as hard as usual

Become a fitter, faster and more confident runner by adding these speed workouts with this simple 8-week plan.

During the pandemic, everything happens on video chat—including exercising with strangers from the comfort of your home

New research suggests that the lactate produced by hard interval workouts alters the hormones that determine your appetite

From polar explorer Eric Larsen to rock climber Sasha DiGiulian, here's what adventurers are doing with their downtime

Tricks to making your home workout as easy—and productive—as possible

Develop explosive power and speed by training muscles to produce maximum force in the shortest possible time with these plyometric exercises

Build explosive power with this simple routine from professional athlete Braydon Bringhurst

Train like a pro with these safe and simple hang-board workouts

Ben Rosario, coach of the Northern Arizona Elite, has some advice for runners in limbo

8 minimalist strength exercises from alpinist Anna Pfaff, for when you're waiting out the weather—or a pandemic

Sitting all day wreaks havoc on the body. Here's how to reset and recenter.

How to stay healthy—and maintain sanity—while you're social-distancing

Turning to technology may be the best way to get a workout in as we continue to practice social distancing

A treadmill-specific workout, this tempo run variation builds strength, reduces impact and keeps it interesting.

Dad knees and an aging body changed my mind about Hokas

Our writer tests out a novel “natural performance enhancer”: breathing through your nose. It's harder than it sounds.

Build your balance with this essential workout—no beam necessary

If you're cooped up indoors and looking to move your body, try one of these routines

Fartlek, the Swedish word for "speed play," is funny to say—but this workout is no joke!

We like to think everything will go according to plan, but it rarely does. Why and how to adapt to personal schedules, abilities and obstacles.

Before trying a fad diet, make sure you have all the information—and eat plenty of calories while you're at it

The simple plank can strengthen your abs to help create an effective, balanced posture—but you need to do it right. Here's how.

There are more ways to mess up the common move than you think. This guide will help you progress into a flawless lunge.

Anxiety, hypochondria, OCD, and travel might sound like a recipe for disaster. But I've seen the world despite my mental health. Here's how I manage my mind on the road.

After a long day on the slopes, your body deserves a little après of its own

The new sport is attracting everyone from NFL players to pro surfers hoping to get an edge in the pool—and on land

A new study finds unexpected benefits from super-short intervals with even shorter recoveries

Iain Mickle's secret to tackling sub-three-hour marathons late into his fifties? Running buddies.

Speed is not to be underestimated, even for marathoners. Doing speed training first will make you more efficient, so race pace is easier. Here's how:

The controversial author and personal trainer shares his lessons from the outer limits of self-experimentation

This simple but challenging progression run can be done virtually anywhere and fits into any portion of your training cycle.

New research hands down verdicts on what to lift, how much, and how hard